ES8503549A1 - Method for facilitating the subsequent debarking of trunks by friction - Google Patents
Method for facilitating the subsequent debarking of trunks by frictionInfo
- Publication number
- ES8503549A1 ES8503549A1 ES531546A ES531546A ES8503549A1 ES 8503549 A1 ES8503549 A1 ES 8503549A1 ES 531546 A ES531546 A ES 531546A ES 531546 A ES531546 A ES 531546A ES 8503549 A1 ES8503549 A1 ES 8503549A1
- Authority
- ES
- Spain
- Prior art keywords
- trunks
- bark
- debarking
- wood
- friction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L1/00—Debarking or removing vestiges of branches from trees or logs; Machines therefor
- B27L1/12—Debarking or removing vestiges of branches from trees or logs; Machines therefor using pliable tools, e.g. chains, cables
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Harvester Elements (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
It is possible to reduce the time required for debarking trunks by friction, for example for dry debarking in a drum for debarking trunks intended for conversion into wood pulp, by means of the prior processing (treatment) of the trunks. During combustion of the bark which has been removed, the latter must be as dry as possible. According to the present invention, the pretreatment, in particular of trunks which are difficult to debark, is improved in such a way that adhesion of the bark to the wood is greatly reduced without it being necessary to supply water to the trunks. This is achieved in that rigid beaters 9, which are joined in an articulated manner to a shaft 13 of a driven rotor which extends essentially transversely to the longitudinal direction of the trunks, are made to collide against the trunks 5 over an area and with an impact force which are sufficient to weaken the union between the bark and the wood through fatigue and/or transportation of moisture, induced mechanically, from the inner bark to a meristem layer which is located between the bark and the wood and which joins them together. The arrangement for pretreatment preferably includes at least one pair of rotors which has rotors 7, one above and one below, of a working width such that it is possible to process simultaneously a plurality of trunks placed side by side. (Fig. 1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8201547A SE444654B (en) | 1982-03-12 | 1982-03-12 | PROCEDURE AND DEVICE TO PROVIDE A SUBSEQUENT FRACTION BARKING BY PRE-TREATMENT |
Publications (2)
Publication Number | Publication Date |
---|---|
ES531546A0 ES531546A0 (en) | 1985-03-16 |
ES8503549A1 true ES8503549A1 (en) | 1985-03-16 |
Family
ID=20346238
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES520470A Expired ES8500121A1 (en) | 1982-03-12 | 1983-03-10 | Method for facilitating the subsequent debarking of trunks by friction |
ES531546A Expired ES8503549A1 (en) | 1982-03-12 | 1984-04-12 | Method for facilitating the subsequent debarking of trunks by friction |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES520470A Expired ES8500121A1 (en) | 1982-03-12 | 1983-03-10 | Method for facilitating the subsequent debarking of trunks by friction |
Country Status (3)
Country | Link |
---|---|
ES (2) | ES8500121A1 (en) |
PT (1) | PT76368B (en) |
SE (1) | SE444654B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE459648B (en) * | 1986-05-22 | 1989-07-24 | Kmw Ab Kone | DEVICE TO PROVIDE BY SUBSEQUENT PROCESSING BY A SUBSEQUENT FRICTION BARKING OF WOOD |
US5322104A (en) * | 1993-05-04 | 1994-06-21 | Wood Technology, Inc. | Flail drum machines and methods |
-
1982
- 1982-03-12 SE SE8201547A patent/SE444654B/en unknown
-
1983
- 1983-03-09 PT PT76368A patent/PT76368B/en unknown
- 1983-03-10 ES ES520470A patent/ES8500121A1/en not_active Expired
-
1984
- 1984-04-12 ES ES531546A patent/ES8503549A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE444654B (en) | 1986-04-28 |
ES531546A0 (en) | 1985-03-16 |
PT76368B (en) | 1986-01-13 |
ES520470A0 (en) | 1984-10-01 |
PT76368A (en) | 1983-04-01 |
ES8500121A1 (en) | 1984-10-01 |
SE8201547L (en) | 1983-09-13 |
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